<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
        <script>

                function liulanqi() {
                    var u = navigator.userAgent;
                    return {
                            trident: u.indexOf('Trident') > -1, //IE内核
                            presto: u.indexOf('Presto') > -1, //opera内核
                            webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核
                            gecko: u.indexOf('Firefox') > -1, //火狐内核Gecko
                            mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端
                            ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios
                            android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android
                            iPhone: u.indexOf('iPhone') > -1 , //iPhone
                            iPad: u.indexOf('iPad') > -1, //iPad
                            webApp: u.indexOf('Safari') > -1 //Safari
                        }
                    }
                console.log(liulanqi())
                </script>
</body>
</html>